Mesh back chair



FIG. 1 is front elevational view of the mesh back chair showing my new design;

FIG. 2 is a right side elevational view thereof with the left side being identical but reversed;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a top plan view thereof; and,

FIG. 5 is a bottom plan view thereof. 

The ornamental design for a mesh back chair, as shown and described. 